A 形式
动词的主要变比形式:be,was/were,been
动名词/现在分词:being
现在时:
过去时:
be作普通动词用时,各种变化均与上表所列相同。其他时态变化均与普通动词的变化一致。但be除了在被动语态中和第115节B中所述情况下可用进行式外,通常不用进行式。
B 用于构成时态
be用于进行式的主动形式:
He is working/will be working等
be用于所有被动形式:
He was follwed/is being followed等
注意:be可用于被动进行式:
主动:They are carrying him.
他们正抬着他。
被动:He is being carried.
他正被抬着。
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